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Ventura County, CA Landscaping Rules: Native Plants (2026)

Few Restrictions

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Key Facts

MWELO Threshold: New landscapes over 500 sq ft
Existing Landscapes: No conversion required
Recommended Species: Coast live oak, toyon, manzanita, sages
Climate Zone: Mediterranean (WUCOLS Zone 3)
Resources: UC Cooperative Extension Ventura County

City-specific rules exist: Ojai, Ventura, Santa Paula, Fillmore, Moorpark, Camarillo, Port Hueneme, Thousand Oaks, and Oxnard have their own native plants rules that differ from Ventura County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Summary

Ventura County encourages native plant landscaping in unincorporated areas through its water-efficient landscape ordinance, consistent with the California Model Water Efficient Landscape Ordinance (MWELO). New development and major renovations must use water-efficient plants.

Full Breakdown

Ventura County implements the California MWELO for new construction and significant landscape renovations exceeding 500 square feet in unincorporated areas. The ordinance encourages use of California native plants adapted to the region's Mediterranean climate, including coast live oak, California sycamore, toyon, manzanita, and native sages. Native plants require less irrigation once established and support local wildlife habitat. The county's diverse ecosystems from coastal to mountain environments support a wide range of native species. Plant palettes for new development projects are reviewed through the planning process. Existing landscapes are not required to convert to native plants, but the county offers resources through the UC Cooperative Extension and local conservation organizations.

Violations & Fines

There are no penalties for not using native plants in existing landscapes. New development projects that fail to comply with MWELO water efficiency standards face planning approval delays and may need to revise landscape plans. Non-compliance with approved landscape plans may result in withholding of certificate of occupancy.

Frequently Asked Questions

Am I required to plant native plants in unincorporated Ventura County?

Not for existing landscapes. New construction and significant landscape renovations over 500 square feet must comply with MWELO water efficiency standards, which encourage but do not mandate exclusively native plants.

What native plants grow well in Ventura County?

Coast live oak, valley oak, California sycamore, toyon, manzanita, California buckwheat, black sage, white sage, and California poppies are all well-suited to the region's Mediterranean climate.

Are there incentives for planting native species?

Some local water districts offer rebates for turf replacement with drought-tolerant landscaping including native plants. The UC Cooperative Extension Ventura County provides free guidance on native plant selection and establishment.

How does Ventura County compare?

See how Ventura County's native plants rules stack up against other locations.

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Ventura County, CA Landscaping Rules: Native Plants (2026)

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